Influence of Synthesis and Composition conditions on Strength Characteristics of Synthetic Carbonado-Type Diamonds

Nojkina, A. V.; Лаптев, А. И.; Ermolaev, A. A.

doi:10.1080/08957950212436

Cited by 8 publications

(2 citation statements)

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“…After more than 50 years of development, China's synthetic diamond production ranked first in the world [1] . 1 In the process of synthetic diamond production, a large amount of metal catalyst is consumed, and the main components of these metal catalysts are Co and Ni [2] . A large amount of waste liquid containing Co and Ni is produced in each cleaning stage of producing synthetic diamond.…”

Section: Introductionmentioning

confidence: 99%

Chemical elution treatment of synthetic diamond production wastewater contaminated soil

Wang

Yang

et al. 2019

E3S Web Conf.

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The optimal removal conditions of heavy metal Coand Nicomposite contaminated soil were studied by the method of oscillating elution. The removal effects of different eluents on Coand Niat different concentrations were discussed.The results showed that the removal efficiency of citric acid with the concentration of 0.2mol•L-1was the best,and the removal rates of Coand Niwere 73.40% and 73.03%.On this basis, the effects of solid-liquid ratio, pH and elution time on the elution effect were investigated.The resultsshow that the trend of the two heavy metals affected by the above three factors is about the same. As the solid-liquid ratio decreases, the elution effect gradually increases, but the growth range is different.As the pH increases, the elution effect of the two heavy metals decreases. In addition, the removal rates of the two heavy metals show a trend of rising first, then stabilizing, and then continuing to rise. Considering economic factors, time cost and treatment effect, the best elution conditions aresolid-liquid ratio of 1: 20, pH value of 2 and elution time of 6 h.

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Section: Introductionmentioning

confidence: 99%

Chemical elution treatment of synthetic diamond production wastewater contaminated soil

Wang

Yang

et al. 2019

E3S Web Conf.

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“…DPCMs are obtained by several methods: by the syn thesis of the "ballas" and "carbonado" polycrystals from carbon materials in the thermodynamic stability region [1], by sintering diamond powders with various additives under high pressures and temperatures, and by the infiltration of the diamond compact with the metal-ceramics melt. The two last methods can be implemented in the region of the thermodynamic sta bility of both diamond and graphite and, conse quently, the sizes of fabricated DPCMs can be consid erably increased to 10 mm and larger.…”

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confidence: 99%

Structural investigations of diamond composites prepared by the infiltration of the diamond compact near the line of thermodynamic equilibrium of graphite with diamond

Elyutin

Belomytsev

Laptev

et al. 2014

Russ. J. Non-ferrous Metals

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The structural order of diamond polycrystalline composite materials obtained by the infiltration of the diamond compact by nickel-silicon alloys at pressures up to 5.0 GPa and temperatures reaching 1800 K is investigated. It is established that they consist of a diamond skeleton and intercrystallite metal-ceramic binder. The diamond skeleton is formed from diamond grains of the starting size with weak diamond-dia mond bonds, while the intergrain space is filled by diamond fragments and an intermetallic binder. The for mation of carbide layers from silicon carbide on the surface of diamond grains determines the strength prop erties of diamond composites in general.

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Synthesis of carbonado-like polycrystalline diamond in the B4C–graphite system

Екимов

Sidorov

Садыков

et al. 2005

Diamond and Related Materials

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Influence of Synthesis and Composition conditions on Strength Characteristics of Synthetic Carbonado-Type Diamonds

Cited by 8 publications

References 0 publications

Chemical elution treatment of synthetic diamond production wastewater contaminated soil

Chemical elution treatment of synthetic diamond production wastewater contaminated soil

Structural investigations of diamond composites prepared by the infiltration of the diamond compact near the line of thermodynamic equilibrium of graphite with diamond

Synthesis of carbonado-like polycrystalline diamond in the B4C–graphite system

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