Zhengzhou Jia Rui Fu new material science and Technology Co. , Ltd.
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AboutFounded in September 2019, the company is located in East Industrial Park, Yuzhou Industrial Cluster Area. Its business scope: jewelry manufacturing; Jewelry wholesale; Nonferrous metal alloy manufacturing;......
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NewsPay attention to Jiarefu corporate information, quickly disseminate industry dynamics, stimulate the positive energy to promote the development of the group.
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ProductIn the cultivation of diamonds in this subdivision of the industry, our company has excellent technology, and 70% of the metal catalysts used in the cultivation of diamond industry are supplied by our ......
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Service & CustomizationCustomize your own diamond, listen to the customer's individual customization needs, and choose the right ring for them.
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ContactWe will provide perfect after-sales service, if you want to contact us or have questions about the product, please call us or leave a message online, we will give you a satisfactory ......
11
2023
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05
Chemical properties of diamond
keyword：JIARUIFU
Source：
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The chemical properties of diamond are stable and can withstand non-oxidizing acids at various temperatures, but they are not resistant to strong alkali, oxates and molten metals. For example, after the erosion of {111} surface of diamond with strong oxidants potassium perchlorate (KCIO) and sodium perchlorate (NaCIO) at 380℃ for 181h, the surface will corrode. Dissolution occurs in molten sodium nitrate salts at 430 ° C, as well as in molten metals.
Chemical stability
The chemical properties of diamond are stable and can withstand non-oxidizing acids at various temperatures, but they are not resistant to strong alkali, oxates and molten metals. For example, after the erosion of {111} surface of diamond with strong oxidants potassium perchlorate (KCIO) and sodium perchlorate (NaCIO) at 380℃ for 181h, the surface will corrode. Dissolution occurs in molten sodium nitrate salts at 430 ° C, as well as in molten metals.
oxidizability
Oxidation begins at 600 ° C in oxygen, combustion at 720 ° C, and combustion at 850 ° C in air. Low vacuum, such as the residual oxygen in 1kPa ~ 1Pa environment, will generate a dense black graphite film on the diamond surface, which can be removed by hot perchloric acid or aqua regia. The formation temperature of the graphite film is above 600℃, but it is not a solid phase transition from diamond to graphite, but a transformation product of carbon monoxide or carbon dioxide. When heated to 1500℃ in a clean inert gas, the graphitization reaction of diamond will begin, and at 2100℃, the graphitization speed is accelerated. The erosion rate of 2000A /min can be achieved by ion beam erosion technique.
Surface property
Diamond is a non-polar mineral, its surface is high oleophilic, wetting contact Angle of 80° ~ 120°. The purity of the diamond itself and the cleanliness of the surface will affect the performance of the surface of the residual corundum.
Chemical properties of diamond
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