共查询到20条相似文献,搜索用时 171 毫秒
1.
陶瓷覆铜板化学镀镍工艺 总被引:2,自引:0,他引:2
1前言 陶瓷覆铜板(DCB)是指铜箔在高温下直接键合到氧化铝或氮化铝陶瓷基片表面而制成的复合板材.DCB象PCB一样能刻蚀出各种图形,具有很大的载流能力. 相似文献
2.
3.
中国建材科学研究院陶瓷耐火研究所与延吉市建筑陶瓷厂协作,不久前研制成功大型陶瓷饰面板和轻质高强陶瓷大型板。大型陶瓷饰面板是我国急需的一种板材,在科研人员解决了生产过程中容易变形和断裂的问题之后,目前这种板材已投入批量生产。轻质高强陶瓷大型板是一种新型建筑材料,其重量很轻,可浮于水上,具有高强、隔音、防寒、保温等特点,并且可以根据需要锯割 相似文献
4.
5.
6.
采用建筑陶瓷板的制备工艺,将亚微米氧化铝粉体加入到陶瓷板材坯料中,研究了其对陶瓷板材外观、烧结性能和力学性能的影响。结果表明:在常规的生产条件下,亚微米氧化铝粉体主要以α-Al2O3颗粒的形式均匀分布在坯体中,具有较强的增白效果。当氧化铝粉体加入量在15%(质量分数)以内时,陶瓷板材样品的吸水率低于0.1%,烧结致密化程度较高,抗弯强度随加入量增加而提高。当加入量继续增加,吸水率增大,抗弯强度下降。氧化铝粉体加入量为15%(质量分数)时,样品的抗弯强度达到最高值96 MPa,比未外加氧化铝的样品提高了30%。在白度较低的低品质原料中,通过加入亚微米氧化铝粉体可大幅度提高产品的白度和强度,既可减少优质资源的消耗,又能较好地满足陶瓷板材对装饰效果和力学性能的要求。 相似文献
7.
8.
微晶玻璃装饰板材工艺及市场前瞻 总被引:8,自引:0,他引:8
1前言笔者应邀在日本学术交流期间,所到之处,发现日本国内建筑物近年来均以微晶玻璃板材装饰居多。这类典雅高贵、豪华气派的装饰板材代替了过去由陶瓷墙内(外)砖装饰,其普及之快,令笔者吃惊。笔者常思,目前我国陶瓷企业大多数建陶产品积压,货币难以回笼,陷于困... 相似文献
9.
本文简要总结了发泡陶瓷的生产工艺及板材加工方式,其板材加工可分为三种方式,分别为带锯切割加工、刮刀磨削加工、磨铣加工,并比较、归纳了各加工方式的技术特点及在实际应用中的优势和缺点。 相似文献
10.
11.
12.
13.
14.
Properties of ceramic fiber reinforced cement composites 总被引:2,自引:0,他引:2
Mechanical properties and preliminary durability of ceramic fiber reinforced Portland cement composites tested with wet-hot accelerating method were investigated. The results showed that the flexural strength of mortar could be increased obviously by adding ceramic fiber into it, but the effect of the flexural reinforcement was influenced by various factors, including fiber length, fiber content and kinds of matrices; the preliminary durability of ceramic fiber in ordinary Portland cement tested with wet-hot accelerating method was much better than that of alkali-resistant (AR) glass fiber. The mechanism of the durability of ceramic fiber in ordinary Portland cement is also discussed. 相似文献
15.
16.
Xiaotong Jin Kangkang Yuan Xuejun Lin Xinqiang Wang Guanghui Zhang Luyi Zhu Na Que Dong Xu 《Ceramics International》2018,44(5):5257-5265
Magnesium oxide (MgO) ceramic fibers are a promising candidate material in high temperature insulating area, supporting area, adsorption area and catalytic area, and most of the properties are determined by the microstructure. In the present work, MgO precursor fibers were fabricated by the centrifugal-spinning combined with sol-gel method. The thermal decomposition and crystallization process of the ceramic fibers were fully characterized. Different atmosphere preheat treatment results suggested that water vapor promoted the thermal decomposition and crystallization of precursor fibers at a lower temperature. Three kinds of particles, including round particles, polyhedron particles to plate particles in the microstructure of the fibers could be manipulated by adjusting the water vapor preheat treatment. The change in textural properties (BET surface area, pore size and pore volume) of the MgO fibers, heated at different temperatures in air after pre-heated treatment in water vapor, was analyzed. Furthermore, the formation mechanisms of the microstructures of the fibers were also presented. The easy manipulation of the microstructures of MgO ceramic fibers may make it a promising material in various areas. 相似文献
17.
18.
19.
金属粘结补强复合陶瓷刀具材料的研究 总被引:2,自引:0,他引:2
通过组成与显微结构的设计研究了活化金属粘结的Ti(C,N)-Al2O3与Al2O3-TiC两类多种组成(牌号)的复合陶瓷刀具材料。这些陶恣由于组成与显微结构的不同,其切削加工的应用范围亦有所不同,但均具有高的强度与韧性,优良的红硬性和良好的化学稳定性,可满足多种加工对象的要求,在其各自的加工范围内,均能发挥出十分优异的切削性能。 相似文献
20.
Effective interfacial areas for gas absorption were measured at various irrigation rates for Raschig rings made of a ceramic (industrial porcelain) and of various plastics. The plastics used were polyethylene and polypropylene having very low wettabilities with water. The surface of some of the plastic packings was covered with a hydrophilic layer. The absorption of pure oxygen by a sodium sulphite solution containing cobalt catalyst was used for the measurement of effective interfacial area. It has been found that the effective interfacial area of plastic packings was about 40 per cent of that of geometrically similar ceramic packings. The effective interfacial area of the plastic packings was increased about 2·5 times by application of the hydrophilic layer. Thus, the wetted surface areas of plastic packings with hydrophilic surface and of ceramic packings are practically the same. 相似文献