CAJ | 학술논문

采用溶胶‐凝胶法结合放电等离子体烧结（S PS ）技术成功制备出立方相结构的掺杂8％（原子分数） Y2 O3的 ZrO2（8YSZ ）陶瓷块体。 X 射线衍射（X RD ）结果表明样品烧结前后均为单一的立方相结构，但是烧结后的样品的晶粒尺寸增大，结晶性变好。Raman光谱结果表明烧结前样品为单一的立方相结构，SPS烧结后样品为单斜相和立方相的混合物，其中单斜相的含量较少。认为XRD与Raman光谱检测结果不一致是因为ZrO2的单斜相和立方相的晶格常数接近以及X RD检测精度不够高造成的。采用S PS方法制备出的样品的致密度为927．％，显微维氏硬度为1551 M Pa 。
채용용효‐응효법결합방전등리자체소결（S PS ）기술성공제비출립방상결구적참잡8％（원자분수） Y2 O3적 ZrO2（8YSZ ）도자괴체。 X 사선연사（X RD ）결과표명양품소결전후균위단일적립방상결구，단시소결후적양품적정립척촌증대，결정성변호。Raman광보결과표명소결전양품위단일적립방상결구，SPS소결후양품위단사상화립방상적혼합물，기중단사상적함량교소。인위XRD여Raman광보검측결과불일치시인위ZrO2적단사상화립방상적정격상수접근이급X RD검측정도불구고조성적。채용S PS방법제비출적양품적치밀도위927．％，현미유씨경도위1551 M Pa 。
8at% yttria‐stabilized zirconia (8YSZ) nanocrystalline powder prepared by sol‐gel method was sintered at 1 200 ℃ .XRD spectra indicatd that the sintered sample maintain a single cubic phase structure ,w hile the grain size and the crystallinity increased .Raman spectra revealed that the as‐prepared sample was a single cubic phase structure ,w hile the sintered sample composed of cubic phase and monoclinic phase ,and the content of monoclinic phase was less than that of the cubic phase .The density of the sample obtained by SPS method was 92 7.% ,and the vickers hardness was 1 551 MPa .