for long time,the traditinal bone china has always used the process of double firing,but it is inefficiency and wastes plenty of energy for the hollow wares.

This paper has worked out a perfect producing processes for bone china decorated under glaze through the analyzing on civil ceramic decorating under glaze and connecting the producing processes and product characteristices of bone china in local ceramics zone.

Lead free frit glaze for bone china has been made successfully by replacing PbO in lead frit glaze with K 2O,SrO and Li 2O.

Application to Bone-china of R_2O-RO-Al_2O_3-B_2O_3-SiO_2 System;

The item is studied on the five-element-system ,which is mainly consisted by K_2O,CaO, Al_2O_3,B_2O_3 and SiO_2, through adding a few kinds of flux oxides, study them flux domino effect and their capability,find out them some change rules and forming-glaze’mechanism of R_2O-RO-Al_2O_3-B_2O_3-SiO_2 system, offer a way of study on bone-china ,which doesn’t contain lead-element.

The reasons of forming the bone china defect "Pinhole" were approached in the light of experiments,and the effective ways to control defect "pinhole"were given.

The problems should paid attention to in Preparation process of casting slip for the bone china were proposed by means of the production and author experiences.

By means of screening slip of bone china to obtain>61μm particles and firing those particles,the relationships between spot defects and quantity and size of residue screened out were made sure.

Since ceramic anodizing process as a kind of special anodic oxidation technique can be used to fabricate porcelain and enamellike oxide film with good protective and decorative effects on the surface of aluminum and its alloy, titaniumpotassium oxalate was selected as the electrolyte to prepare the ceramic anodizing film on Al and Albased alloy.

The corrugated ceramic packings offer excellent resistance to high-temperature hydrogen sulfide and naphthenie acid corrosions.