Marjaana Karhu

Senior Scientist, M.Sc. (Eng)

20102020
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Research Output 2010 2020

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Article
2020

Utilizing mixed-mineralogy ferroan magnesite tailings as the source of magnesium oxide in magnesium potassium phosphate cement

Ismailov, A., Merilaita, N., Solismaa, S., Karhu, M. & Levänen, E., 20 Jan 2020, In : Construction and Building Materials. 231, 117098.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Magnesium Oxide
Magnesite
Mineralogy
Magnesia
Tailings
2019
7 Citations (Scopus)

Impacts of casting scales and harsh conditions on the thermal, acoustic, and mechanical properties of indoor acoustic panels made with fiber-reinforced alkali-activated slag foam concretes

Mastali, M., Kinnunen, P., Karhu, M., Abdollahnejad, Z., Korat, L., Ducman, V., Alzaza, A. & Illikainen, M., 2019, In : Materials. 12, 5, 825.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Acoustic properties
Alkalies
Slags
Foams
Casting

Magnesite-rich mining tailings as a raw material for refractory ceramics: Microstructural and thermal analysis

Karhu, M., Lagerbom, J., Solismaa, S. & Huttunen-Saarivirta, E., 1 Jan 2019, In : Proceedings of the Estonian Academy of Sciences. 68, 2, p. 145-149 5 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)

Mining tailings as raw materials for reaction-sintered aluminosilicate ceramics: Effect of mineralogical composition on microstructure and properties

Karhu, M., Lagerbom, J., Solismaa, S., Honkanen, M., Ismailov, A., Räisänen, M. L., Huttunen-Saarivirta, E., Levänen, E. & Kivikytö-Reponen, P., 1 Mar 2019, In : Ceramics International. 45, 4, p. 4840-4848 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Mullite
Aluminosilicates
Tailings
Raw materials
Microstructure
2018
15 Citations (Scopus)

Mechanical and acoustic properties of fiber-reinforced alkali-activated slag foam concretes containing lightweight structural aggregates

Mastali, M., Kinnunen, P., Isomoisio, H., Karhu, M. & Illikainen, M., 30 Oct 2018, In : Construction and Building Materials. 187, p. 371-381 11 p.

Research output: Contribution to journalArticleScientificpeer-review

Acoustic properties
Alkalies
Slags
Foams
Concretes
Powders
Raw materials
Cobalt
manufacturing
routes

The effect of carbon and nickel additions on the precursor synthesis of Cr3C2-Ni nanopowder

Kaunisto, K., Kotilainen, M., Karhu, M., Lagerbom, J., Vuorinen, T., Honkanen, M., Vippola, M. & Turunen, E., 1 Jun 2018, In : Ceramics International. 44, 8, p. 9338-9346 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Nickel
Carbon
Powders
Chromium
Carbides
4 Citations (Scopus)

Valorization of Finnish mining tailings for use in the ceramics industry

Solismaa, S., Ismailov, A., Karhu, M., Sreenivasan, H., Lehtonen, M., Kinnunen, P., Illikainen, M. & Räisänen, M. L., 2018, In : Bulletin of the Geological Society of Finland. 90, p. 33-54 22 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
tailings
ceramics
phlogopite
mica
ceramics industry
2017

Reaction Heat Utilization in Aluminosilicate-Based Ceramics Synthesis and Sintering

Karhu, M., Lagerbom, J., Kivikytö-Reponen, P., Ismailov, A. & Levänen, E., 1 Mar 2017, In : Journal of Ceramic Science and Technology. 8, 1, p. 101-112 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Aluminosilicates
Sintering
Aluminum
Kaolin
Kaolinite
2016
10 Citations (Scopus)

Chemical synthesis of WC-Co from water-soluble precursors : the effect of carbon and cobalt additions to WC synthesis

Kanerva, U., Karhu, M., Lagerbom, J., Kronlöf, A., Honkanen, M., Turunen, E. & Laitinen, T., 2016, In : International Journal of Refractory Metals and Hard Materials. 56, p. 69-75

Research output: Contribution to journalArticleScientificpeer-review

Cobalt
Carbon
Water
Phase structure
Chemical analysis

Reaction heat potential utilization in mullite and spinel based ceramics synthesis and sintering

Karhu, M., Lagerbom, J., Kivikytö-Reponen, P., Lindroos, T. & Laitinen, T., 2016, In : Mechanik. 5-6, p. 520-521

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Mullite
Sintering
Exothermic reactions
Energy conservation
Raw materials
2015
12 Citations (Scopus)
Tungsten
Phase structure
Raw materials
Carbon
Glycine
2014
8 Citations (Scopus)

Manufacturing and modelling of sintered micro-porous absorption material for low frequency applications

Karhu, M., Lindroos, T. J. & Uosukainen, S., 2014, In : Applied Acoustics. 85, p. 150-160 11 p.

Research output: Contribution to journalArticleScientificpeer-review

material absorption
manufacturing
low frequencies
foams
laminates
2012
7 Citations (Scopus)

Microstructure analysis and damage patterns of thermally cycled Ti-49.7Ni (at.%) wires

Karhu, M. & Lindroos, T., 1 Mar 2012, In : Smart Materials and Structures. 21, 3, 035008.

Research output: Contribution to journalArticleScientificpeer-review

wire
Wire
damage
microstructure
Microstructure
2010
11 Citations (Scopus)

Long-term behaviour of binary Ti-49.7Ni (at.%) SMA actuators - The fatigue lives and evolution of strains on thermal cycling

Karhu, M. & Lindroos, T., 1 Nov 2010, In : Smart Materials and Structures. 19, 11, 115019.

Research output: Contribution to journalArticleScientificpeer-review

spectral mixture analysis
fatigue life
Thermal cycling
Actuators
actuators