烧结

The porously sintered hydroxyapatite and poly oligomer were used to prepare a series porous poly/hydroxyapatide composites as a biodegradable hard tissue repair material, and its physical-chemical properties were studied in this investigation. The used PLLA oligomer, mentioned above, was prepared via acidic hydrolytic reaction.

本研究利用烧结的方法制作多孔性的氢氧基磷灰石烧结体，加入聚乳酸及由高分子量聚乳酸降解的乳酸寡聚物制作成PLLA/HA复合材，以作为硬组织生物可吸收性修补材之用。

Pressureless sintering technique was used to prepare the composites.

本研究以无压烧结的方式制备复合材。

First of all, three kinds of Si〓N〓 ceramics with different microstructure and mechanical behaviour were made by use of pressureless sintering.

首先，利用常压烧结，制备了三种显微结构不同、力学性能各异的Si〓N〓陶瓷。

Pressureless sintering A1N/BN composite ceramics density can be achieved, but of harsh conditions, the mechanical properties are not high.

无压烧结A1N/BN复相陶瓷可以达到的致密度化，但制备条件苛刻，力学性能不高。

By using pressureless sintering technique, the samples of Al2O3 with anisotropic grains through the doping of small amount of TiO2 and MgO were prepared.

通过在氧化铝中添加微量氧化钛和氧化镁，利用无压烧结工艺，制备了具有明显各向异性晶粒的氧化铝块材。

Ceramic Products with complicated shapes could be produced easily and economically by pressureless sintering.

由于采用常压烧结工艺，可经济地制造出各种形状的陶瓷制品，本研究具有很大的实用价值。

The Y-TZP nanoceramics with an average grain size of 60 nm and a relative density of 98% were prepared by pressureless sintering.

采用无压烧结获得了相对密度为98%、平均晶粒尺寸为60nm的Y-TZP纳米陶瓷。Y-TZP纳米陶瓷的显微硬度主要取决于陶瓷的相对密度、相结构和晶粒尺寸，即陶瓷的四方相质量分数越高，相对密度越大，晶粒尺寸越小，则显微硬度越高。

The effects of BN content on the thermal conductivity, hardness and microstructure of AlN-BN composite ceramics prepared by ceramic injection molding and pressureless sintering, as well as the rheological characteristics of the mixtures were discussed.

采用粉末注射成形和无压烧结相结合的工艺制备AlN-BN复相陶瓷，讨论了AlN-BN混合料的流变性能以及BN含量对复相陶瓷热导率、硬度以及显微组织的影响。

In present work, Al〓O〓/Ti Ceramics with several weight percent Ti were made by pre-sintering and pressureless sintering at flow of Ar with Al〓O〓/Ti covered powder.

但是，金属氧化物的使用可能会降低材料的机械性能，以过快的升温速度烧结又有可能导致产品不均匀受热。

The aims of this paper is to obtain Y-TZP materials via low temperature sintering with certain amount of additives added, then prolongate the application area of these materials.

本工作的目的是通过在Y-TZP粉料中加入一定含量的添加剂，低温烧结制备性能较好的Y-TZP陶瓷，拓展其应用范围。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。