CAJ | 학술논문

采用熔融‐热处理工艺制备了掺钕钙钛锆石基玻璃陶瓷，研究了不同热处理工艺对玻璃陶瓷晶相结构的影响，用粉末静态浸泡法（PC T法）对玻璃陶瓷的浸出性能进行了评价。结果表明，玻璃陶瓷的玻璃转变温度（ Tg ）和析晶峰温度分别为580℃和740℃。采用先制备玻璃再进行热处理的方法（二步法）很容易生成CaTiO3晶相，而采用从熔融温度降低到核化温度成核，再升高到晶化温度进行热处理的方法（一步法），可获得稳定的2M型CaZrTi2 O7晶相，且CaZrTi2 O7晶粒呈树枝状分布在玻璃基质中。玻璃陶瓷固化体中B和Na元素的归一化质量损失在14 d后达到稳定值（约1 mg／m2），Nd元素的归一化质量损失在28 d后达到稳定值（约0.2 mg／m2），均较硼硅酸盐玻璃固化体的低1个数量级。
채용용융‐열처리공예제비료참녀개태고석기파리도자，연구료불동열처리공예대파리도자정상결구적영향，용분말정태침포법（PC T법）대파리도자적침출성능진행료평개。결과표명，파리도자적파리전변온도（ Tg ）화석정봉온도분별위580℃화740℃。채용선제비파리재진행열처리적방법（이보법）흔용역생성CaTiO3정상，이채용종용융온도강저도핵화온도성핵，재승고도정화온도진행열처리적방법（일보법），가획득은정적2M형CaZrTi2 O7정상，차CaZrTi2 O7정립정수지상분포재파리기질중。파리도자고화체중B화Na원소적귀일화질량손실재14 d후체도은정치（약1 mg／m2），Nd원소적귀일화질량손실재28 d후체도은정치（약0.2 mg／m2），균교붕규산염파리고화체적저1개수량급。
Nd‐doped zirconolite‐based glass‐ceramics were prepared by melting‐heat treatment technique .T he effects of heat treatment processing on phase structure of the glass‐ceramics were investigated . The leaching properties of the glass‐ceramics were also evaluated by static leaching experiments (product consistency test ,PCT ) .The results show that glass transformation temperature (Tg ) and crystallization temperature of the glass‐ceramics are about 580 ℃ and 740 ℃ ,respectively .CaTiO3 phase forms easily when the glass‐ceramics were prepared by two‐step method ,i .e .the glass was prepared first ,and then it was heat‐treated at the crystallization temperatures .2M‐zirconolite phase can be obtained by one‐step method ,i .e .the heat‐treatment immedi‐ately followed by the melting process .In addition ,the zirconolite crystals exhibit a dendritic shape .The normalized mass loss of B and Na in the glass‐ceramics remains almost unchanged (about 1 mg/m2 ) after 14 days ,while the normalized mass loss of Nd reaches stable value (about 0.2 mg/m2 ) after 28 days .The normalized mass loss of B , Na ,and Nd in the glass‐ceramics is an order of magnitude lower than that of borosilicate glasses ,respectively .