Title:
HOLLOW CERAMIC BALL MEMBER, FRAC BALL, HYDRAULIC FRACTURING SYSTEM, AND METHOD OF PRODUCING HOLLOW CERAMIC BALL MEMBER
Document Type and Number:
Japanese Patent JP2015140573
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic ball which can be destructed relatively easily with impact such as striking force while having high pressure resistance.SOLUTION: This invention provides a hollow ceramic ball member that is a hollow member having a substantially spherical outer peripheral face, and an inner peripheral face, and is mainly composed of ceramic at least comprising carbon, wherein a carbon content ratio of an outside area comprising the outer peripheral face is higher than a carbon content ratio of an inside area of comprising the inner peripheral face.
Inventors:
NAKANO YASUSHI
HAMASHIMA HIROSHI
HAMASHIMA HIROSHI
Application Number:
JP2014014028A
Publication Date:
August 03, 2015
Filing Date:
January 29, 2014
Export Citation:
Assignee:
KYOCERA CORP
International Classes:
E21B43/26; C04B35/584