INVESTIGADORES
SUAREZ Gustavo
artículos
Título:
Thermal Shock Behavior of Zircon Based Refractories
Autor/es:
NICOLÁS RENDTORFF; GUSTAVO SUÁREZ; YESICA BRUNI; LILIANA GARRIDO; ESTEBAN AGLIETTI
Revista:
Advances in Science and Technology
Editorial:
Transactions Technological Publications
Referencias:
Año: 2010 vol. 70 p. 59 - 64
ISSN:
1662-8969
Resumen:
Abstract: In service refractory materials are submitted to local temperature gradients that originate
thermal stresses causing a thermal shock (TS) damage to the material. Practical tests for evaluating
the thermal shock resistance (TSR) determine the variation or change of some characteristic
property of the test sample like E (elastic module) or the strength before and after quenching. In this
work, the microstructure and thermal shock behavior of Zircon based refractories are analyzed.
Several compositions (eight), from pure Zircon to 70 % of Zircon were studied. The main structural
and mechanical properties of the refractories were characterized, as modulus of rupture, elastic
modulus, porosity, and microstructure. The dynamic elastic modulus E of the refractories was
measured by the excitation technique. The TS behavior was evaluated by measuring the decrease in
E and the modulus of rupture, before and after a quenching test. The influence of the presence of
other phases was also analyzed. Refractories showed Zircon as the main crystalline phase. In some
materials, m-ZrO2 appears coming from Zircon dissociation. The thermal shock behavior of
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
thermal stresses causing a thermal shock (TS) damage to the material. Practical tests for evaluating
the thermal shock resistance (TSR) determine the variation or change of some characteristic
property of the test sample like E (elastic module) or the strength before and after quenching. In this
work, the microstructure and thermal shock behavior of Zircon based refractories are analyzed.
Several compositions (eight), from pure Zircon to 70 % of Zircon were studied. The main structural
and mechanical properties of the refractories were characterized, as modulus of rupture, elastic
modulus, porosity, and microstructure. The dynamic elastic modulus E of the refractories was
measured by the excitation technique. The TS behavior was evaluated by measuring the decrease in
E and the modulus of rupture, before and after a quenching test. The influence of the presence of
other phases was also analyzed. Refractories showed Zircon as the main crystalline phase. In some
materials, m-ZrO2 appears coming from Zircon dissociation. The thermal shock behavior of
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
thermal stresses causing a thermal shock (TS) damage to the material. Practical tests for evaluating
the thermal shock resistance (TSR) determine the variation or change of some characteristic
property of the test sample like E (elastic module) or the strength before and after quenching. In this
work, the microstructure and thermal shock behavior of Zircon based refractories are analyzed.
Several compositions (eight), from pure Zircon to 70 % of Zircon were studied. The main structural
and mechanical properties of the refractories were characterized, as modulus of rupture, elastic
modulus, porosity, and microstructure. The dynamic elastic modulus E of the refractories was
measured by the excitation technique. The TS behavior was evaluated by measuring the decrease in
E and the modulus of rupture, before and after a quenching test. The influence of the presence of
other phases was also analyzed. Refractories showed Zircon as the main crystalline phase. In some
materials, m-ZrO2 appears coming from Zircon dissociation. The thermal shock behavior of
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
thermal stresses causing a thermal shock (TS) damage to the material. Practical tests for evaluating
the thermal shock resistance (TSR) determine the variation or change of some characteristic
property of the test sample like E (elastic module) or the strength before and after quenching. In this
work, the microstructure and thermal shock behavior of Zircon based refractories are analyzed.
Several compositions (eight), from pure Zircon to 70 % of Zircon were studied. The main structural
and mechanical properties of the refractories were characterized, as modulus of rupture, elastic
modulus, porosity, and microstructure. The dynamic elastic modulus E of the refractories was
measured by the excitation technique. The TS behavior was evaluated by measuring the decrease in
E and the modulus of rupture, before and after a quenching test. The influence of the presence of
other phases was also analyzed. Refractories showed Zircon as the main crystalline phase. In some
materials, m-ZrO2 appears coming from Zircon dissociation. The thermal shock behavior of
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
In service refractory materials are submitted to local temperature gradients that originate
thermal stresses causing a thermal shock (TS) damage to the material. Practical tests for evaluating
the thermal shock resistance (TSR) determine the variation or change of some characteristic
property of the test sample like E (elastic module) or the strength before and after quenching. In this
work, the microstructure and thermal shock behavior of Zircon based refractories are analyzed.
Several compositions (eight), from pure Zircon to 70 % of Zircon were studied. The main structural
and mechanical properties of the refractories were characterized, as modulus of rupture, elastic
modulus, porosity, and microstructure. The dynamic elastic modulus E of the refractories was
measured by the excitation technique. The TS behavior was evaluated by measuring the decrease in
E and the modulus of rupture, before and after a quenching test. The influence of the presence of
other phases was also analyzed. Refractories showed Zircon as the main crystalline phase. In some
materials, m-ZrO2 appears coming from Zircon dissociation. The thermal shock behavior of
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.
2 appears coming from Zircon dissociation. The thermal shock behavior of
refractory of high Zircon content is typical of the brittle ceramic materials. Materials showed a
relation between elastic module and strength. Dynamic elastic modulus measurements have shown
to be suitable for evaluation the TSR for these materials.