Laser‐Induced Calcite—Aragonite Transition

Mansoor Alam; Tarasankar DebRoy; Rustum Roy

doi:10.1111/j.1151-2916.1990.tb06581.x

Laser‐Induced Calcite—Aragonite Transition

Mansoor Alam, Tarasankar DebRoy, Rustum Roy

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

High‐pressure phases of CaCO₃, namely aragonite, calcite II, and possibly calcite III, were synthesized in air by exposing 10‐ to 20‐μm‐size particles of CaCO₃ (calcite I phase) to a CO₂ laser radiation at short pulse lengths (≤0.1 ms). The process, therefore, has the same effect as exposing the particles to at least several hundred megapascals pressure. Processing at higher pulse lengths resulted in the decomposition of CaCO₃ to CaO and CO₂. The extent of decomposition increased with increasing pulse length.

Original language	English (US)
Pages (from-to)	733-735
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	73
Issue number	3
DOIs	https://doi.org/10.1111/j.1151-2916.1990.tb06581.x
State	Published - Mar 1990

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.1990.tb06581.x

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title = "Laser‐Induced Calcite—Aragonite Transition",

abstract = "High‐pressure phases of CaCO3, namely aragonite, calcite II, and possibly calcite III, were synthesized in air by exposing 10‐ to 20‐μm‐size particles of CaCO3 (calcite I phase) to a CO2 laser radiation at short pulse lengths (≤0.1 ms). The process, therefore, has the same effect as exposing the particles to at least several hundred megapascals pressure. Processing at higher pulse lengths resulted in the decomposition of CaCO3 to CaO and CO2. The extent of decomposition increased with increasing pulse length.",

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AU - Alam, Mansoor

AU - DebRoy, Tarasankar

AU - Roy, Rustum

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N2 - High‐pressure phases of CaCO3, namely aragonite, calcite II, and possibly calcite III, were synthesized in air by exposing 10‐ to 20‐μm‐size particles of CaCO3 (calcite I phase) to a CO2 laser radiation at short pulse lengths (≤0.1 ms). The process, therefore, has the same effect as exposing the particles to at least several hundred megapascals pressure. Processing at higher pulse lengths resulted in the decomposition of CaCO3 to CaO and CO2. The extent of decomposition increased with increasing pulse length.

AB - High‐pressure phases of CaCO3, namely aragonite, calcite II, and possibly calcite III, were synthesized in air by exposing 10‐ to 20‐μm‐size particles of CaCO3 (calcite I phase) to a CO2 laser radiation at short pulse lengths (≤0.1 ms). The process, therefore, has the same effect as exposing the particles to at least several hundred megapascals pressure. Processing at higher pulse lengths resulted in the decomposition of CaCO3 to CaO and CO2. The extent of decomposition increased with increasing pulse length.

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JO - Journal of the American Ceramic Society

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Laser‐Induced Calcite—Aragonite Transition

Abstract

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