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The Asia-Pacific 6D communications satellite was successfully launched!
The Asia-Pacific 6D communications satellite was successfully launched!
At 20:11 on July 9, 2020, the Asia-Pacific 6D communications satellite was successfully launched by the Long March 3B carrier rocket at the Xichang Satellite Launch Center. The Asia-Pacific 6D communication satellite is a high-throughput broadband communication satellite in geostationary orbit. It was developed by the Communications Satellite Division of the Fifth Academy of Aerospace Science and Technology Group (hereinafter referred to as the Fifth Academy), and adopted the new-generation Dongfanghong-4 enhanced version independently developed by my country. The satellite public platform (DFH-4E platform) is built with a launch weight of about 5550 kg and a service life of 15 years in orbit. Up to now, the Fifth Academy has developed and launched 304 spacecraft.
2020-12-11
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At 20:11 on July 9, 2020, the Asia-Pacific 6D communications satellite was successfully launched by the Long March 3B carrier rocket at the Xichang Satellite Launch Center. The Asia-Pacific 6D communication satellite is a high-throughput broadband communication satellite in geostationary orbit. It was developed by the Communications Satellite Division of the Fifth Academy of Aerospace Science and Technology Group (hereinafter referred to as the Fifth Academy), and adopted the new-generation Dongfanghong-4 enhanced version independently developed by my country. The satellite public platform (DFH-4E platform) is built with a launch weight of about 5550 kg and a service life of 15 years in orbit. Up to now, the Fifth Academy has developed and launched 304 spacecraft.
Silicon carbide and gallium nitride have stolen the limelight and will now usher in an explosion
Silicon carbide and gallium nitride have stolen the limelight and will now usher in an explosion
Today, the third-generation semiconductor materials represented by silicon carbide (SiC) and gallium nitride (GaN) have received great attention, and their role in high-power, high-temperature, and high-voltage applications is not traditional Comparable to silicon devices. Especially with the increasingly stringent requirements for high-performance semiconductor materials in emerging high-tech fields such as new energy and 5G, the third-generation semiconductor materials are destined to further shine.
2020-12-11
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Today, the third-generation semiconductor materials represented by silicon carbide (SiC) and gallium nitride (GaN) have received great attention, and their role in high-power, high-temperature, and high-voltage applications is not traditional Comparable to silicon devices. Especially with the increasingly stringent requirements for high-performance semiconductor materials in emerging high-tech fields such as new energy and 5G, the third-generation semiconductor materials are destined to further shine.
The world's top ten precious metals ranking
The world's top ten precious metals ranking
Each metal has a different value, which depends on the rarity of the metal, the difficulty of extraction and the characteristics of the metal. Throughout history, precious metals have always been traded as currencies, and now they have become a form of investment. When you think of precious metals, the first thing you think of should be gold and silver. Although the price of gold and silver is also very expensive, and has been included in the top ten most precious metals. But there are other metals that are more valuable than gold and silver. The following 10 are the most expensive metals in the world in 2020, let us take a look.
2020-12-11
See more information
Each metal has a different value, which depends on the rarity of the metal, the difficulty of extraction and the characteristics of the metal. Throughout history, precious metals have always been traded as currencies, and now they have become a form of investment. When you think of precious metals, the first thing you think of should be gold and silver. Although the price of gold and silver is also very expensive, and has been included in the top ten most precious metals. But there are other metals that are more valuable than gold and silver. The following 10 are the most expensive metals in the world in 2020, let us take a look.
Application and development of high purity metal materials
Application and development of high purity metal materials
Pure tungsten materials with a purity of 99.999% (5N) and 99.9999% (6N) are called high-purity tungsten. The total impurity element content of high-purity tungsten should be controlled between 1 ppm and 10 ppm (10-6~10-5). For some special impurity elements, such as radioactive elements, alkali metal elements, heavy metal elements and gases Elements etc. also have special requirements. Since the radioactive elements U and Th have a rays, they can cause "soft errors" in the memory circuit and affect the quality and performance of the circuit. Therefore, in the impurity elements of high-purity tungsten, the content of U and Th should be particularly low. Said it should be as low as 1 ppb (that is, 1×10-9) or less, and as low as 0.1 ppb (1×10-10). In addition, high-purity tungsten also has strict requirements on the content of alkali metal elements (K, Na, Li). High-purity tungsten is mainly prepared into pure metal targets or alloy targets, and functional films that meet the requirements are obtained by magnetron sputtering. Because high-purity tungsten (5 N or 6 N) has high resistance to electron migration, high-temperature stability and the ability to form stable silicides, it is used as a gate, connection and barrier metal in the form of thin films in the electronics industry. High-purity tungsten and tungsten silicon and tungsten-titanium sputtering targets are often applied in the form of thin films for ultra-large-scale integrated circuits as resistance layers, diffusion barriers, transition layers, etc., and as gate materials and connections in metal oxide semiconductor transistors Materials, etc. The rapid development of modern electronics, semiconductors, and photovoltaic industries has almost exacting and perfect purity requirements for materials, especially metal materials. High-purity tungsten plays a very important role due to its extremely high performance.
2020-12-01
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Pure tungsten materials with a purity of 99.999% (5N) and 99.9999% (6N) are called high-purity tungsten. The total impurity element content of high-purity tungsten should be controlled between 1 ppm and 10 ppm (10-6~10-5). For some special impurity elements, such as radioactive elements, alkali metal elements, heavy metal elements and gases Elements etc. also have special requirements. Since the radioactive elements U and Th have a rays, they can cause "soft errors" in the memory circuit and affect the quality and performance of the circuit. Therefore, in the impurity elements of high-purity tungsten, the content of U and Th should be particularly low. Said it should be as low as 1 ppb (that is, 1×10-9) or less, and as low as 0.1 ppb (1×10-10). In addition, high-purity tungsten also has strict requirements on the content of alkali metal elements (K, Na, Li). High-purity tungsten is mainly prepared into pure metal targets or alloy targets, and functional films that meet the requirements are obtained by magnetron sputtering. Because high-purity tungsten (5 N or 6 N) has high resistance to electron migration, high-temperature stability and the ability to form stable silicides, it is used as a gate, connection and barrier metal in the form of thin films in the electronics industry. High-purity tungsten and tungsten silicon and tungsten-titanium sputtering targets are often applied in the form of thin films for ultra-large-scale integrated circuits as resistance layers, diffusion barriers, transition layers, etc., and as gate materials and connections in metal oxide semiconductor transistors Materials, etc. The rapid development of modern electronics, semiconductors, and photovoltaic industries has almost exacting and perfect purity requirements for materials, especially metal materials. High-purity tungsten plays a very important role due to its extremely high performance.
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The Asia-Pacific 6D communications satellite was successfully launched!
The Asia-Pacific 6D communications satellite was successfully launched!
At 20:11 on July 9, 2020, the Asia-Pacific 6D communications satellite was successfully launched by the Long March 3B carrier rocket at the Xichang Satellite Launch Center. The Asia-Pacific 6D communication satellite is a high-throughput broadband communication satellite in geostationary orbit. It was developed by the Communications Satellite Division of the Fifth Academy of Aerospace Science and Technology Group (hereinafter referred to as the Fifth Academy), and adopted the new-generation Dongfanghong-4 enhanced version independently developed by my country. The satellite public platform (DFH-4E platform) is built with a launch weight of about 5550 kg and a service life of 15 years in orbit. Up to now, the Fifth Academy has developed and launched 304 spacecraft.
See more information
At 20:11 on July 9, 2020, the Asia-Pacific 6D communications satellite was successfully launched by the Long March 3B carrier rocket at the Xichang Satellite Launch Center. The Asia-Pacific 6D communication satellite is a high-throughput broadband communication satellite in geostationary orbit. It was developed by the Communications Satellite Division of the Fifth Academy of Aerospace Science and Technology Group (hereinafter referred to as the Fifth Academy), and adopted the new-generation Dongfanghong-4 enhanced version independently developed by my country. The satellite public platform (DFH-4E platform) is built with a launch weight of about 5550 kg and a service life of 15 years in orbit. Up to now, the Fifth Academy has developed and launched 304 spacecraft.
Silicon carbide and gallium nitride have stolen the limelight and will now usher in an explosion
Silicon carbide and gallium nitride have stolen the limelight and will now usher in an explosion
Today, the third-generation semiconductor materials represented by silicon carbide (SiC) and gallium nitride (GaN) have received great attention, and their role in high-power, high-temperature, and high-voltage applications is not traditional Comparable to silicon devices. Especially with the increasingly stringent requirements for high-performance semiconductor materials in emerging high-tech fields such as new energy and 5G, the third-generation semiconductor materials are destined to further shine.
See more information
Today, the third-generation semiconductor materials represented by silicon carbide (SiC) and gallium nitride (GaN) have received great attention, and their role in high-power, high-temperature, and high-voltage applications is not traditional Comparable to silicon devices. Especially with the increasingly stringent requirements for high-performance semiconductor materials in emerging high-tech fields such as new energy and 5G, the third-generation semiconductor materials are destined to further shine.
The world's top ten precious metals ranking
The world's top ten precious metals ranking
Each metal has a different value, which depends on the rarity of the metal, the difficulty of extraction and the characteristics of the metal. Throughout history, precious metals have always been traded as currencies, and now they have become a form of investment. When you think of precious metals, the first thing you think of should be gold and silver. Although the price of gold and silver is also very expensive, and has been included in the top ten most precious metals. But there are other metals that are more valuable than gold and silver. The following 10 are the most expensive metals in the world in 2020, let us take a look.
See more information
Each metal has a different value, which depends on the rarity of the metal, the difficulty of extraction and the characteristics of the metal. Throughout history, precious metals have always been traded as currencies, and now they have become a form of investment. When you think of precious metals, the first thing you think of should be gold and silver. Although the price of gold and silver is also very expensive, and has been included in the top ten most precious metals. But there are other metals that are more valuable than gold and silver. The following 10 are the most expensive metals in the world in 2020, let us take a look.
Application and development of high purity metal materials
Application and development of high purity metal materials
Pure tungsten materials with a purity of 99.999% (5N) and 99.9999% (6N) are called high-purity tungsten. The total impurity element content of high-purity tungsten should be controlled between 1 ppm and 10 ppm (10-6~10-5). For some special impurity elements, such as radioactive elements, alkali metal elements, heavy metal elements and gases Elements etc. also have special requirements. Since the radioactive elements U and Th have a rays, they can cause "soft errors" in the memory circuit and affect the quality and performance of the circuit. Therefore, in the impurity elements of high-purity tungsten, the content of U and Th should be particularly low. Said it should be as low as 1 ppb (that is, 1×10-9) or less, and as low as 0.1 ppb (1×10-10). In addition, high-purity tungsten also has strict requirements on the content of alkali metal elements (K, Na, Li). High-purity tungsten is mainly prepared into pure metal targets or alloy targets, and functional films that meet the requirements are obtained by magnetron sputtering. Because high-purity tungsten (5 N or 6 N) has high resistance to electron migration, high-temperature stability and the ability to form stable silicides, it is used as a gate, connection and barrier metal in the form of thin films in the electronics industry. High-purity tungsten and tungsten silicon and tungsten-titanium sputtering targets are often applied in the form of thin films for ultra-large-scale integrated circuits as resistance layers, diffusion barriers, transition layers, etc., and as gate materials and connections in metal oxide semiconductor transistors Materials, etc. The rapid development of modern electronics, semiconductors, and photovoltaic industries has almost exacting and perfect purity requirements for materials, especially metal materials. High-purity tungsten plays a very important role due to its extremely high performance.
See more information
Pure tungsten materials with a purity of 99.999% (5N) and 99.9999% (6N) are called high-purity tungsten. The total impurity element content of high-purity tungsten should be controlled between 1 ppm and 10 ppm (10-6~10-5). For some special impurity elements, such as radioactive elements, alkali metal elements, heavy metal elements and gases Elements etc. also have special requirements. Since the radioactive elements U and Th have a rays, they can cause "soft errors" in the memory circuit and affect the quality and performance of the circuit. Therefore, in the impurity elements of high-purity tungsten, the content of U and Th should be particularly low. Said it should be as low as 1 ppb (that is, 1×10-9) or less, and as low as 0.1 ppb (1×10-10). In addition, high-purity tungsten also has strict requirements on the content of alkali metal elements (K, Na, Li). High-purity tungsten is mainly prepared into pure metal targets or alloy targets, and functional films that meet the requirements are obtained by magnetron sputtering. Because high-purity tungsten (5 N or 6 N) has high resistance to electron migration, high-temperature stability and the ability to form stable silicides, it is used as a gate, connection and barrier metal in the form of thin films in the electronics industry. High-purity tungsten and tungsten silicon and tungsten-titanium sputtering targets are often applied in the form of thin films for ultra-large-scale integrated circuits as resistance layers, diffusion barriers, transition layers, etc., and as gate materials and connections in metal oxide semiconductor transistors Materials, etc. The rapid development of modern electronics, semiconductors, and photovoltaic industries has almost exacting and perfect purity requirements for materials, especially metal materials. High-purity tungsten plays a very important role due to its extremely high performance.
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