| 1. | Piezoelectric properties of pmn - pt ceramics near morphotropic phase boundary 钛酸铅陶瓷介电与压电性能的研究 |
| 2. | Study on morphotropic phase boundary of pb - based relaxor ferroelectric materials 弛豫铁电材料的准同型相界研究 |
| 3. | Phase boundary potential 相界电位 |
| 4. | The dehydration of ferrous oxalate dihydrate conformed to nuclei production and nuclei growth model , and the decomposition of ferrous oxalate conformed to phase boundary reaction 在静态自产气氛下,二水草酸亚铁脱水反应遵循随机成核与核增长模型,草酸亚铁热分解生成氧化铁遵循相界面控制动力学模型。 |
| 5. | The voidage of the electrode was improved and the three phases boundary was ameliorated by the thermal annealing process of air electrode , and the performance of catalyst was improved as a result 并通过电极热处理工艺,明显提高电极孔隙率、改善三相界面,提高了催化性能。采用稳态极化曲线测试方法研究sr的掺杂对la _ ( 1 - x ) sr _ xmno _ 3催化性能的影响。 |
| 6. | The main conclusions are summarized as follows : classical nucleation and growth mechanism only occurs near the phase boundary of the disordered phase , by which 8 " phase precipitates from supersaturated solid solution directly 主要研究发现:只有处在无序相界附近的合金沉淀机制基本为经典形核长大,相直接从过饱和固溶体中沉淀,序列为:过饱和固溶体化学计量比相长大。 |
| 7. | Piezoelectric properties were detected , it is suggested that the optimum poling condition is maintaining 15 minutes under 4kv / mm , poling temperature is 70 xrd results indicate that the fabric transited from rhombohedral to tetragonal gradually with the substitution of the ba2 + . morphotropic phase boundaries ( mpb ) of the ceramic exist in the composition range of x = 0 . 06 ~ 0 . 10 Xrd分析表明,随着ba ~ ( 2 + )取代量的增加,样品晶体结构逐渐由三方相向四方相转变,在x = 0 . 06 0 . 10组成范围内存在三方、四方相共存的准同型相界。 |
| 8. | In this paper , pmnt , pznt single crystals in the vicinity of the morphotropic phase boundary were obtained by high - temperature solution technique . the growth , structure and phase stability of single crystals were studied . the results are shown as follows : 1 本论文采用高温熔液法技术,对用高温熔液法生长弛豫铁电单晶材料工艺进行了研究,成功地制备出准同型相界附近的pmnt 、 pznt单晶材料,分析了晶体形成、晶体结构及其相结构稳定性,并对生长机理作了初步探索,主要研究结论如下: 1 |