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Grey relationship analysis and grey forecasting modeling on thermal stability of synthetic single diamond

哈尔滨工业大学学报（英文版）2006，Vol.13Issue(1)：73-78,6.

Grey relationship analysis and grey forecasting modeling on thermal stability of synthetic single diamond

作者信息

1. Key Laboratory of Precision & Non-traditional Machining of Ministry of Education, Dalian University of Technology, Dalian 116024, China;Key Laboratory of Precision & Non-traditional Machining of Ministry of Education, Dalian University of Technology, Dalian 116024, China;Key Laboratory of Precision & Non-traditional Machining of Ministry of Education, Dalian University of Technology, Dalian 116024, China
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摘要

Abstract

Through analyzing 7 Ib-type samples of synthetic single diamonds by their DTA and TG in air, we ascertained the extrapolated onset temperature on the curves of DTA as the characteristic temperature of their thermal stabilities. Based on the grey system theory, we analyzed 4 factors influential in the thermal stability by the grey relationship analysis, a quantitative method, and derived the grey relationship sequence, that is, the rank of the influence extent of 4 factors on the thermal stability. Furthermore, we established the grey forecasting model, namely GM ( 1,5 ), for predicting the thermal stability of single diamonds with their intrinsic properties, which was then examined by a deviation-probability examination. The results illustrate that it is reasonable to take the Extrapolated Onset Temperature in DTA as the characteristic temperature for thermal stability (TS)of Ib -type synthetic single diamonds. The nitrogen content and grain shape regularity of diamonds are dominating factors. Likewise, grain size and compressive strength are minor factors. In addition, GM (1,5) can be used to predict the thermal stability of Ib-type synthetic single diamonds available. The precision rank of GM( 1,5 ) is‘GOOD’.

关键词

synthetic single diamond/thermal stability/grey relationship analysis/grey forecasting model

Key words

synthetic single diamond/thermal stability/grey relationship analysis/grey forecasting model

分类

矿业与冶金

引用本文复制引用

..Grey relationship analysis and grey forecasting modeling on thermal stability of synthetic single diamond[J].哈尔滨工业大学学报（英文版）,2006,13(1):73-78,6.

哈尔滨工业大学学报（英文版）

ISSN：1005-9113

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