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Effects of Ti additive on HPHT diamond synthesis in Fe-Ni-C system |
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| Authors: | Wei Han XiaoPeng Jia HongSheng Jia MeiHua Hu HaiLiang Huang XiaoBing Liu HongAn Ma |
| Institution: | National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China |
| Abstract: | Diamond crystals with low nitrogen concentration were synthesized from the Fe-Ni-C system with Ti additive at high pressure and high temperature (HPHT) in a china-type cubic high pressure apparatus (CHPA). The synthesis pressure range was 4.8-5.2 GPa, and the temperature range was 1420-1600 K. The lowest synthesis pressure for diamond fell first and then rose with the increase of Ti additive. The color, shape, surface morphology and nitrogen impurity concentration of the synthesized diamond crystals were ch... |
| Keywords: | Ti additive HPHT diamond synthesis low nitrogen concentration |
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