آماده سازی سرامیک های دی براید زیرکونیوم

Preparation of zirconium diboride ceramics by reactive spark
plasma sintering of zirconium hydride–boron powders

آماده سازی سرامیک های دی براید زیرکونیوم به کمک واکنش سینتر کردن پلاسمای جرقه ایِ  پودرهای هیدرید زیرکونیوم-بور

ABSTRACT

Monolithic ZrB2 ceramics were prepared by reactive spark plasma sintering of a ZrH2–B mixture at 1650–۱۸۰۰ C. The microstructure of the resulting ZrB2 ceramics were characterized by X-ray diffractometry and scanning electron microscopy. The ZrH2–B mixture converted completely into ZrB2 without trace quantities of residual ZrH2 and B. Highly dense ZrB2 was obtained at 1750 C or above. The elastic moduli, flexural strength, thermal and electrical conductivities were comparable with those of ZrB2 ceramics obtained by sintering conventional ZrB2 powders