摘要
按硬玉分子组成配料,在1350～1550℃的高温下灼烧,然后淬火到室温得到具有硬玉组成的玻璃,在5.0GPa,1450℃下晶化,合成了宝石翡翠,其尺寸可达到(?)12mm×6mm。并通过差热分析及高压下的淬火分析研究了翡翠在常压下及高压下的熔点变化,利用淬火、退火及老化实验研究了人工翡翠宝石的稳定性。结果表明,人工翡翠宝石的热稳定性与天然翡翠相同。
Jadeite is synthesized at pressure of 3. 0-5. 0GPa, temperature of 1200-1550℃ , for a time duration of 5-240 min from its glass composition of NaAlSi2O6. The Jadeite jewel is obtained in our experiment with a size of 12mm in diameter and 6mm in thickness. The melting points are studied by DTA and high temperature quenching at high pressure. The thermal stability is studied by quenching, annealing, and aging experiment, which shows that the synthetic jadeite jewel, whose optimum crystalline conditions are over 4. 5GPa, 1400℃, 60min. , has the same thermal stability as that of natural jadeite.
出处
《高压物理学报》
CAS
CSCD
北大核心
1992年第4期291-296,共6页
Chinese Journal of High Pressure Physics
关键词
高压
硬玉
合成
热稳定性
熔点
jadeite, jewel, stability, high-pressure, differential thermal analysis (DTA).
