影响95氧化铝瓷球耐磨性的几个关键因素

本文介绍了影响９５氧化铝瓷球耐磨性的几个关键因素,并指出氧化铝瓷球原料配方中使用辅助原料引入ＣａＯ、ＭｇＯ,对降低烧结温度,提高耐生的益处。     

成形压力对氧化铝瓷球性能的影响

本文以不同的压力等静压成形瓷球，研究了成形压力对瓷球烧结温度、密度及耐磨性的影响。结果表明：在本研究系统内随着压力的增加瓷球的烧结温度下降，烧成温度范围拓宽。采用150MPa成形的瓷球密度最大且耐磨性最好。     

CaO-MgO比例对中高铝瓷球性能的影响

保持AI2O3和si02含量不变,变化CaO和MgO的比例制造氧化铝瓷球。研究了不同CaO、MgO含量对瓷球密度、烧结以及耐磨性的影响。结果表明,随着CaO含量降低、MgO含量的升高,瓷球烧成温度升高,密度相近,但磨耗降低。     

低成本生产白色中高铝瓷球

本文针对目前市场上纯氧化铝粉原料价格昂贵的问题,研究了利用工业废料制备白色中高铝瓷球的工艺,不仅大大降低了生产成本,而且有利于环境保护。     

高铝瓷球生产工艺若干主参数的优化

本利用佛山地区某高铝瓷球生产线,采用正交法设计安排试验,对生产工艺若干主参数分段进行优化组合。其结果是：料浆含水率48％,料浆喷雾压力2．3MPa－2．7MPa,喷雾干燥尾气温度103℃－105℃为制备优质压形粉料的最佳组合;压形粉料含水率0．4％－0．5％,粉料颗粒分布：＞60目0、150目67％＞、180目18％、＜180目15％,成形压力55MPa及在梭式窑窑车底层（约1510℃－1520℃）,可制备出高性能低成本高铝瓷球。     

氧化铝瓷球的成形方法及设备简介

１前言 随着建陶行业的不断发展,天然球石的产量和性能已不能满足需要,势必要有一种人工球石来代替,氧化铝瓷球是较好的替代品,可根据不同要求选择不同档次的氧化铝瓷球,因而对氧化铝瓷球的需求量越来越大,档次也越来越高。本文将就氧化铝瓷球的几种生产方法及其设备作一简要介绍。２氧化铝瓷球的生产方法及其设备２．１挤压法成形氧化铝瓷球 挤压法成形氧化铝瓷球是目前同类瓷球中档次最低,但也是产量最大的一种成形方法,一般用于成形中铝以下瓷球或者是粘土球。这种瓷球烧结温度低,生产设备简单,投资小,只需要有球磨机、压滤机…     

我国氧化铝瓷球的生产现状及市场前景

介绍了我国氧化铝瓷球生产企业的规模,生产工艺及产品规格质量等状况,分析了销售市场的困难及不利因素,同时展望了市场的广阔前景,指出企业要加强内部管理,降低生产成本,做好销售工作,以拓宽氧化铝瓷球的销售市场。     

中铝瓷球的应用研究

本文以长石、粘土、矾土等天然矿物原料,采用可塑法成型工艺,研究了配方与烧结温度、瓷球密度、外观颜色的关系,研制成功了成本低、密度大、外观质量较好的中铝瓷球的较佳配方,并解决了瓷球生产中的关键工艺技术问题。     

高铝瓷球常见缺陷及原因分析

在总结α氧化铝粉为主要原料生产高铝瓷球研磨介质生产实践经验的基础上,对高铝瓷球的质量缺陷进行了较为系统的研究分析与总结,并提出了一些有效的处理方法和改进措施以为同行提供参考。     

不同诱导剂对氧化铝陶瓷性能的影响与分析

以苎麻织物为模板,聚合氯化铝为浸渍液,并在浸渍液中添加正硅酸乙酯、四氯化锆、异丙醇铝作为诱导剂,将模板经过浸渍、干燥、烧结,制备出具有织物结构的氧化铝陶瓷。采用XRD、TEM等检测技术,对不同诱导剂制备的材料的物理性能、物相构成和显微结构进行了分析和表征。结果表明,诱导剂的加入很大程度上影响了氧化铝陶瓷的浸渍率、显气孔率;增大了Al2O3晶粒的粒径,提高了试样的致密性。     

不同诱导剂对氧化铝陶瓷性能的影响与分析

以苎麻织物为模板,聚合氯化铝为浸渍液,并在浸渍液中添加正硅酸乙酯、四氯化锆、异丙醇铝作为诱导剂,将模板经过浸渍、干燥、烧结,制备出具有织物结构的氧化铝陶瓷。采用XRD、TEM等检测技术,对不同诱导剂制备的材料的物理性能、物相构成和显微结构进行了分析和表征。结果表明,诱导剂的加入很大程度上影响了氧化铝陶瓷的浸渍率、显气孔率;增大了Al2O3晶粒的粒径,提高了试样的致密性。     

低温快烧瓷质玻化砖配方的研制与生产

前言通过引入唐县粘土 ,取代成本较高的广州黑泥、信阳膨润土、坯体增强剂等极大地降低了原料成本 ,并成功地研制出低温一次快烧瓷质砖产品 ,其产品性能、白度等都跃上了一个新台阶 ,取得了显著的经济效益。文中主要介绍了坯用原料的基本性能 ,一次快烧坯釉配方研制的方法及生产工艺参数。1　坯体配方的研制1.1　低温快烧对原料的要求根据瓷质玻化砖使用性能和低温快烧配方 ,对原料有如下要求 :①原料中尽可能地少含有机物 ,不产生或较少产生ＣＯ2 、Ｈ2 、Ｎ2 、Ｈ2 Ｏ等分解物。以免产生夹心、针孔、氧化不足等缺陷 ;②减少吸热反应的发生…     

温度制度对用辊棒废料制备的中铝瓷球性能的影响

以辊棒废料为主要原料，在CaO—MgO—SiO2—Al2O3体系中，研究烧结温度和保温时间对中铝瓷球性能的影响。结果表明：在1330℃烧结，保温2h条件下，研制含铝量小于60％的中铝瓷球的性能最优异。     

Optimized etching of porcelain and polycrystalline alumina with a glass phase

Chemical and thermal etching techniques are commonly used in ceramography to enhance microstructural features. While thermal etching works well for high purity ceramic systems, this technique may not be appropriate where glass is present. Porcelain and industrial alumina both contain a glass phase, typically 40?60 vol% and 4?30 vol%, respectively, and these glass chemistries are proposed to be similar. Chemical etching of porcelain is common, but the images published in the literature are frequently over-etched. When glass is present in the grain boundaries of alumina, thermal etching can cause the glass to disappear or to recrystallize, obscuring the microstructure. Because of this, it is proposed that both chemical and thermal etching are necessary to prepare an industrial alumina microstructure for grain size measurements. In addition, it was observed that chemical etching is sensitive to the residual stress in the glass phase, becoming more aggressive when there is residual tension in the glass.     

Thermomechanical and thermodilatometric analysis of green alumina porcelain

A modulated force thermomechanical analysis (mf-TMA) and thermodilatometric analysis (TDA) of the green ceramic mixture of kaolin (27 wt.%), Al₂O₃ (50 wt.%) and feldspar (23 wt.%) up to 1000 °C is presented. The mf-TMA reflects changes during heating the green ceramics with higher sensitivity than TDA. Discrepancies between mf-TMA and TDA revealed that the elastic behavior of the green porcelain samples is determined most importantly by processes on the crystal boundaries (escaping of the water molecules at the low temperatures up to 150 °C and solid state sintering at the temperatures above 450 °C). Processes in the crystal interiors (e.g. dehydroxylation) have a lesser function. Thermodilatometric results depend more on the processes which take place inside the crystals than on the processes on the crystal surfaces.     

The characterisation of paper composite porcelain in a fired state by XRD and SEM

Paper composite porcelain is widely used to produce artistic objects in ceramic art. The aim of this study is to characterise the microstructure and chemical compositions of paper composite porcelain since they determine the material properties. Interaction between paper filler, paper fibre, and the porcelain clay body in its fired state were investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The starting materials were kaolin, feldspar, quartz, hybrid copy/print waste paper, and other waste papers. XRD clearly shows that the paper composite porcelain bodies in the fired state mainly consist of α-quartz, mullite, anorthite and amorphous materials in a complex matrix. In the fired state, calcite from the waste paper’s relict interface to kaolinite from porcelain. A transformation to anorthite in the microstructure of paper composite porcelain was indicated. In the microstructure, anorthite tubes were observed as fibrous structures in their fired state.