| 1. | The results show that the grain size of cosb3 grows with increasing sintering temperature or sintering time 结果表明:随着烧结温度的增加和烧结时间的延长,烧结体的晶粒有明显长大。 |
| 2. | Sintering time ranges from 3 to 10 hours , and sintering temperature ranges from 160ctc to 1900 ? , under an ar . protection of 1 . 0 atm 在1 . 0atm的ar气保护下进行烧结,选用的烧结时间从3小时到10小时,烧结温度由1600到1900 。 |
| 3. | When sintering temperature and sintering time are 625 c and 7min respectively , the densenfied bulk thermoelectric materials with mean grains size of 100nm were prepared 当烧结温度为625 ,烧结时间7min时,得到了最小平均晶粒尺寸为100nm的cosb _ 3密实块体材料。 |
| 4. | All nanometer porous samples have a major peak at 2 . 69ev and a minor one at 3 . 0ev at room temperature , the intensity of luminescence peak declined as the sintering time prolonged 对于纳米多孔碳化硅,所有样品的发光主峰都位于2 . 69ev附近,在3 . 0ev附近处有一肩峰。 |
| 5. | After these researches , the equations for densification kinetics of jd and ty materials are established . the effect of sintering time on the phase structure and microstructure was also investigated 此外还研究了两种材料的烧结收缩行为,并建立了jd材料和ty材料的烧结动力学方程。 |
| 6. | The sintering time also affects the specimens " properties . nano - composite wc - co powder can be hot press sintered to cermet whose hra is 94 . 6 and trs is 1183 mpa under 1350 for 2 hours 最终烧结实验表明纳米复合wc - co粉末1350保温2小时条件下的热压烧结可以获得抗弯强度为1183mpa ,洛氏硬度为94 . 6的硬质合金。 |
| 7. | Sintering time ranges from 3 to 10 hours , and sintering ranges from 1600 @ to 1900 @ , after sintering , the samples are dry - oxidized in an oxidization furnace and then have their excessive carbon removed by diamond - cream grinding or direct grinding 气保护下进行烧结,烧结完成后,用干氧法在氧化炉中氧化并研磨或直接研磨的方法去除样品表面过量的碳。 |
| 8. | Cosb3 nano - powders were used as starting materials , and bulk thermoelectric materials were prepared by spark plasma sintering ( sps ) . we have investigated the influence of sintering temperature and sintering time on grains size 以纳米和微米cosb _ 3粉末为原料,用放电等离子烧结( sps )方法制备cosb _ 3块体材料,并探讨了烧结温度和时间对烧结体晶粒尺寸的影响。 |
| 9. | As shown by the measurements , the electrical resistivity of sintered psc has a tendency of first decreasing and then increasing as the sintering temperature and / or sintering time increase . also it decreases with the increased pressure on the pressed powder compact 对样品的电阻率进行了测量,总体呈现出随烧结时间和烧结温度的增加而先降低后增加的趋势,并随压坯的成型压力的增加而降低。 |
| 10. | From the experiment , the optimum preparation condition is as follows : ce3 ~ vcitric = 1 : 3 , reaction temperature is 65 ? , ph is 2 - 3 , drying temperature of gel is 80 ? , sintering temperature is 500 ? and sintering time is 2h . crystal grows up in two steps 通过实验得出最佳实验条件,硝酸铈与柠檬酸的摩尔比为1 : 3 ,在65水浴中反应成胶, 100下烘干, 500焙烧,可得到平均晶粒尺寸为7nm的ceo _ 2纳米晶。 |