Synthesis and characterization of new refractory coating based on basalt
Апстракт
Basalt is a hard volcanic rock. Good technical properties make basalt an
important raw material for the production of glass and glass-ceramics for the application
in various departments of industry. It is a cheap and widespread raw material for the
synthesis of different products such as basalt wool, basalt fibers, basalt plastics, composite
materials. The new application of basalt is to obtain refractory coatings and
application in foundries and protection against fire, corrosion, and erosion. The basic
components of the foundry coatings are refractory filler, binder, additives, and solvent.
Preparation of basalt-based filler is done by grinding and mechanical activation at grain
diameter 20μm. The composition of the coating was determined about the parameters
of the casting process and ranged within limits: filler 92-95%; binder 2,2-2,5%; additives
0,5-1,5% and solvent to the density of coating: 2 g/cm3. Coating suspension with this
density showed high sedimentation stabil...ity (below 4.5% of precipitated matters for
24h). These foundry coating can enable the development of new methods of casting
alloys with casting temperature over 1200⁰C.
Composition of basalt-based protective coatings was determined by research
and ranged within the limits: 80-85% refractory filler, 12-17% binder based on epoxy
resin, with organic additives and solvent. To characterize the coating, an ultrasonic
vibration method with a stationary sample was used in accordance with the ASTM G32
standard. The mass loss of samples in the function of the cavitation time was monitored.
Sample surface degradation level was quantified by using the image analysis.
During the test, changes in sample morphology were monitored by means of the scanning
electron microscopy method. Cavitation rate was determined as an indicator of the
resistance of the coating under the effect of cavitation. It has been shown that the
cavitation rate in the case of coatings applied to metal surfaces is higher (v = 0.108
mg/min) than in the case of coatings applied to non-metallic surfaces (v = 0.0435
mg/min). In order to achieve greater resiliency of the coating under the effect of cavitation,
good adhesion of the coating and a higher coating thickness are important. Test
results can provide an estimate of the resistance of coat layers in similar operating
conditions. These coatings are intended for the protection of metallic and non-metallic
surfaces, parts of equipment in metallurgy and mining.
Кључне речи:
basalt / refractory coating / cavitation resistance / mass loss / image analysisИзвор:
4th Metallurgical & Materials Engineering Congress of South-East Europe(MME SEE 2019) Belgrade, Serbia, 2019, 63-Колекције
Институција/група
Inovacioni centarTY - CONF AU - Pavlović, Marko AU - Dojčinović, Marina AU - Prokić-Cvetković, Radica AU - Andrić, Ljubiša PY - 2019 UR - https://machinery.mas.bg.ac.rs/handle/123456789/7554 AB - Basalt is a hard volcanic rock. Good technical properties make basalt an important raw material for the production of glass and glass-ceramics for the application in various departments of industry. It is a cheap and widespread raw material for the synthesis of different products such as basalt wool, basalt fibers, basalt plastics, composite materials. The new application of basalt is to obtain refractory coatings and application in foundries and protection against fire, corrosion, and erosion. The basic components of the foundry coatings are refractory filler, binder, additives, and solvent. Preparation of basalt-based filler is done by grinding and mechanical activation at grain diameter 20μm. The composition of the coating was determined about the parameters of the casting process and ranged within limits: filler 92-95%; binder 2,2-2,5%; additives 0,5-1,5% and solvent to the density of coating: 2 g/cm3. Coating suspension with this density showed high sedimentation stability (below 4.5% of precipitated matters for 24h). These foundry coating can enable the development of new methods of casting alloys with casting temperature over 1200⁰C. Composition of basalt-based protective coatings was determined by research and ranged within the limits: 80-85% refractory filler, 12-17% binder based on epoxy resin, with organic additives and solvent. To characterize the coating, an ultrasonic vibration method with a stationary sample was used in accordance with the ASTM G32 standard. The mass loss of samples in the function of the cavitation time was monitored. Sample surface degradation level was quantified by using the image analysis. During the test, changes in sample morphology were monitored by means of the scanning electron microscopy method. Cavitation rate was determined as an indicator of the resistance of the coating under the effect of cavitation. It has been shown that the cavitation rate in the case of coatings applied to metal surfaces is higher (v = 0.108 mg/min) than in the case of coatings applied to non-metallic surfaces (v = 0.0435 mg/min). In order to achieve greater resiliency of the coating under the effect of cavitation, good adhesion of the coating and a higher coating thickness are important. Test results can provide an estimate of the resistance of coat layers in similar operating conditions. These coatings are intended for the protection of metallic and non-metallic surfaces, parts of equipment in metallurgy and mining. C3 - 4th Metallurgical & Materials Engineering Congress of South-East Europe(MME SEE 2019) Belgrade, Serbia T1 - Synthesis and characterization of new refractory coating based on basalt SP - 63 UR - https://hdl.handle.net/21.15107/rcub_machinery_7554 ER -
@conference{ author = "Pavlović, Marko and Dojčinović, Marina and Prokić-Cvetković, Radica and Andrić, Ljubiša", year = "2019", abstract = "Basalt is a hard volcanic rock. Good technical properties make basalt an important raw material for the production of glass and glass-ceramics for the application in various departments of industry. It is a cheap and widespread raw material for the synthesis of different products such as basalt wool, basalt fibers, basalt plastics, composite materials. The new application of basalt is to obtain refractory coatings and application in foundries and protection against fire, corrosion, and erosion. The basic components of the foundry coatings are refractory filler, binder, additives, and solvent. Preparation of basalt-based filler is done by grinding and mechanical activation at grain diameter 20μm. The composition of the coating was determined about the parameters of the casting process and ranged within limits: filler 92-95%; binder 2,2-2,5%; additives 0,5-1,5% and solvent to the density of coating: 2 g/cm3. Coating suspension with this density showed high sedimentation stability (below 4.5% of precipitated matters for 24h). These foundry coating can enable the development of new methods of casting alloys with casting temperature over 1200⁰C. Composition of basalt-based protective coatings was determined by research and ranged within the limits: 80-85% refractory filler, 12-17% binder based on epoxy resin, with organic additives and solvent. To characterize the coating, an ultrasonic vibration method with a stationary sample was used in accordance with the ASTM G32 standard. The mass loss of samples in the function of the cavitation time was monitored. Sample surface degradation level was quantified by using the image analysis. During the test, changes in sample morphology were monitored by means of the scanning electron microscopy method. Cavitation rate was determined as an indicator of the resistance of the coating under the effect of cavitation. It has been shown that the cavitation rate in the case of coatings applied to metal surfaces is higher (v = 0.108 mg/min) than in the case of coatings applied to non-metallic surfaces (v = 0.0435 mg/min). In order to achieve greater resiliency of the coating under the effect of cavitation, good adhesion of the coating and a higher coating thickness are important. Test results can provide an estimate of the resistance of coat layers in similar operating conditions. These coatings are intended for the protection of metallic and non-metallic surfaces, parts of equipment in metallurgy and mining.", journal = "4th Metallurgical & Materials Engineering Congress of South-East Europe(MME SEE 2019) Belgrade, Serbia", title = "Synthesis and characterization of new refractory coating based on basalt", pages = "63", url = "https://hdl.handle.net/21.15107/rcub_machinery_7554" }
Pavlović, M., Dojčinović, M., Prokić-Cvetković, R.,& Andrić, L.. (2019). Synthesis and characterization of new refractory coating based on basalt. in 4th Metallurgical & Materials Engineering Congress of South-East Europe(MME SEE 2019) Belgrade, Serbia, 63. https://hdl.handle.net/21.15107/rcub_machinery_7554
Pavlović M, Dojčinović M, Prokić-Cvetković R, Andrić L. Synthesis and characterization of new refractory coating based on basalt. in 4th Metallurgical & Materials Engineering Congress of South-East Europe(MME SEE 2019) Belgrade, Serbia. 2019;:63. https://hdl.handle.net/21.15107/rcub_machinery_7554 .
Pavlović, Marko, Dojčinović, Marina, Prokić-Cvetković, Radica, Andrić, Ljubiša, "Synthesis and characterization of new refractory coating based on basalt" in 4th Metallurgical & Materials Engineering Congress of South-East Europe(MME SEE 2019) Belgrade, Serbia (2019):63, https://hdl.handle.net/21.15107/rcub_machinery_7554 .