Novel composite oxides
TW202633833APending Publication Date: 2026-08-16MITSUI METAL CO LTD
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Patent Information
- Application Number
- TW114142627
- Authority / Receiving Office
- TW · TW
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-11-01
- Filing Date
- 2025-11-03
- Publication Date
- 2026-08-16
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Figure TWG2TA001072895_001 
Figure TWG2TA001072895_002
Abstract
This invention relates to a composite oxide represented by the general formula (1) CaxZn2-xP2O7±δ (where a portion of Ca can be replaced by Sr and / or Ba and / or Mg, or all of Ca can be replaced by Sr and / or Ba. Where 0<x<2, and δ is a value determined by the manner in which the charge neutrality condition is satisfied). The composite oxide can be a negative thermal expansion material having a linear expansion coefficient (α) of less than 0 ppm / K in a temperature range of at least 0°C to 140°C.
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