Standard No.:	GB/T 1970-1996
English Name:	Test method for acid and alkaline-resistance of porous ceramic
Chinese Name:	多孔陶瓷耐酸、碱腐蚀性能试验方法
Chinese Classification:	Q32    Special ceramics
Professional Classification:	GB    National Standard
ICS Classification:	81.060.20 81.060.20    Ceramic products 81.060.20
Source Content Issued by:	State Technical Supervision Bureau
Issued on:	1996-09-13
Implemented on:	1997-4-1
Status:	valid
Superseding:	GB 1970-1980
Target Language:	English
File Format:	PDF
Word Count:	1500 words
Translation Price(USD):	30.0
Delivery:	via email in 1 business day

1 Subject Content and Application Scope This standard specifies the test method for acid and alkaline-resistance of porous ceramic. This standard is applicable to the determination of acid and alkaline-resistance of porous ceramic. 2 Method Summary 2.1 Strength reduction method: boil the specimens of porous ceramics in 20% sulfuric acid solution (or 1% sodium hydroxide solution) for 1h and calculate the reduction rate of bending strength than that before corrosion. 2.2 Mass loss method: boil particle specimens in 20% sulfuric acid solution (or 1% sodium hydroxide solution) for 1h and calculate the loss rate of mass than that before corrosion. 3 Apparatuses and Reagents