Home

Login to enhance your shopping experience.

Login or Create an Account
Main Menu
Categories
1916-2016

Effect of Annealing in a Sulphur Dioxide containing Atmosphere on the Modulus.... JSGT_V22_T357-T371

Effect of Annealing in a Sulphur Dioxide containing Atmosphere on the Modulus.... JSGT_V22_T357-T371

Specimens of sheet glass 10 cm. long. 0·8:3 cm. wide and 0·274 cm thick with ground and mechanically polished edges. have been heated at temperatures of 400°, 490°, 530°, 550° and 580° for two hours (and, in a number of cases. for additional periods) both in air and in an air-sulphur dioxide mixture. In both types of atmosphere, heating at temperatures of 490--580° resulted in an increase in mechanical strength as measured by the modulus of rupture, but the increase by heating in sulphur dioxide-air mixture was considerably greater than in air alone; for example, at 550° it was approximately 17% greater. Light films of sodium sulphate were formed on the glass in two hours at 400° and 490°, and increased rapidly with temperature between 490° and 580°. After the first film had been removed, a second treatment in sulphur dioxide-air mixture produced a second film of lighter character, the logarithm of the weight of this second film being inversely proportional to the reciprocal of the absolute temperature of treatment.

Price:

£ 15.00

 

All required fields are marked with a star (*). Click the 'Add To Cart' or 'Add To Wish List' button at the bottom of this form to proceed.

Item Quantity

Enter the appropriate quantity for this item below.

Account Menu
Quick Store Search

Advanced Search
Shopping Cart

There are no items in your shopping cart.